For the preparation of an 11-oxaprostaglandin such as [2R,(1E,3R),3S,(4Z),4R)]-7-{tetrahydro-2-[4-(3-chlorophenoxy)-3-hydroxy-1-butenyl]-4-hydroxy-3-furanyl}-4-heptenoic acid and its ester derivatives, a novel process uses a novel enantiomerically enriched compound for formula (1) wherein the bond between carbon atoms y and z is either a single or double bond; R
1
is selected from vinyl, trialkylsilylethynyl, a formyl group protected as an acetal, or a protected hydroxymethyl group; R
2
is C
1-5
alkyl, optionally substituted at the terminus with an aryloxy or alkoxy group; and R
3
-R
6
are independently selected from C
1-6
alkyl and C
6-10
aryl.
1
用于制备11-氧代
前列腺素的新型方法,例如[2R,(1E,3R),3S,(4Z),4R)]-7-{四氢-2-[4-(3-
氯苯氧)-3-羟基-1-
丁烯基]-
4-羟基-3-
呋喃基}-4-
庚烯酸及其酯衍
生物,采用新型对映富集化合物的公式(1),其中碳原子y和z之间的键为单键或双键;R1选择自
乙烯基,三烷基
硅基
乙炔基,作为
缩醛保护的
甲醛基,或保护的羟甲基基团;R2是C1-5烷基,可在末端用芳氧基或烷氧基取代;R3-R6分别选择自C1-6烷基和C6-10芳基。